'nurs' <name(char9)|!> ['DEFINE' <u.deg> <v.deg> <u.npnt> ->
<v.npnt> <u.nknt> <v.nknt>]|
['CONTROL' <u.index> <v.index> <pnt> <weight>]|
['KNOT' <U>|<V> <index> <value>]|
['END']
This keyword is used to define a nurbs shape. Surfaces can use nurbs to define the interior geometry. But this functionallity is not used by the mesher so far. It is used only for rendering purposes. CAD-interfaces might use this functionality.